Flexible flat cable structure

Abstract

A flexible flat cable structure includes a conductor layer, a first low-k dielectric and impedance adjusting adhesive layer, a first metal isolation layer, a second low-k dielectric and impedance adjusting adhesive layer, and a second metal isolation layer. The first low-k dielectric and impedance adjusting adhesive layer is adhered to one side of the conductor layer, the first metal isolation layer is adhered to a surface of the first low-k dielectric and impedance adjusting adhesive layer, the second low-k dielectric and impedance adjusting adhesive layer is adhered to another side of the conductor layer, and the second metal isolation layer is adhered to a surface of the second low-k dielectric and impedance adjusting adhesive layer so as to adjust the impedance of the flexible flat cable structure according to requirements and reduce the electromagnetic interference thereof.

1 . A flexible flat cable structure, comprising:
 a conductor layer;   a first low-k dielectric and impedance adjusting adhesive layer adhered to one side of the conductor layer;   a first metal isolation layer adhered to a surface of the first low-k dielectric and impedance adjusting adhesive layer;   a second low-k dielectric and impedance adjusting adhesive layer adhered to another side of the conductor layer; and   a second metal isolation layer adhered to a surface of the second low-k dielectric and impedance adjusting adhesive layer, wherein a thickness of the first, low-k dielectric and impedance adjusting adhesive layer and a thickness of the second low-k dielectric and impedance adjusting adhesive layer are about 0.1 mm to 1 mm, the first low-k dielectric and impedance adjusting adhesive layer is directly adhered to the conductor layer and the first metal isolation layer, and the second low-k dielectric and impedance adjusting adhesive layer is directly adhered to the conductor layer and the second metal isolation layer, wherein the first metal isolation layer and the second metal isolation layer reduce the electromagnetic interference, and the first low-k dielectric and impedance adjusting adhesive layer and the second low-k dielectric and impedance adjusting adhesive layer adjust the impedance of the flexible flat cable structure.   
     
     
         2 . (canceled). 
     
     
         3 . The flexible flat cable structure of  claim 1 , wherein the conductor layer comprises a plurality of conducting metal wires and an insulation layer surrounding the conducting metal wires. 
     
     
         4 . The flexible flat cable structure of  claim 3 , wherein a dielectric constant of the first low-k dielectric and impedance adjusting adhesive layer and a dielectric constant of the second low-k dielectric and impedance adjusting adhesive layer are about 2 to 4. 
     
     
         5 . (canceled). 
     
     
         6 . The flexible flat cable structure of  claim 3 , wherein the insulation layer is an epoxy resin insulation layer, a polyester insulation layer or a polyamine insulation layer. 
     
     
         7 . (canceled). 
     
     
         8 . The flexible flat cable structure of  claim 1 , wherein the second low-k dielectric and impedance adjusting adhesive layer is directly adhered to the conductor layer and the second metal isolation layer. 
     
     
         9 . (canceled). 
     
     
         10 . The flexible flat cable structure of  claim 1 , wherein a thickness of the first low-k dielectric and impedance adjusting adhesive layer is the same as a thickness of the second low-k dielectric and impedance adjusting adhesive layer.